Lifting equipment for jack operation



Sept. 16, 1958 l. GROSS 2,852,229

` LIFTING EQUIPMENT FOR JACK OPERATION Filed April 14, 1954 3 Sheets-Shedl 1 DENTOR ATTORNEY l. GROSS LIFTING EQUIPMENT FOR JACK OPERATION sept. 16, 195s 5 Sheets-Sheet 2 Filed April 14, 1954 INVENTOR Sept. 16, 1958 3 Sheets-Sheet 5 Filed April 14, 1954 INVENTOR A Tri- 17 United States Patent LIFTING EQUIPMENT FOR JACK OPERATION Israel Gross, Camp Hill, Pa.

Application April 14, 1954, Serial No. 423,020

1 Claim. (Cl. 2541-134) My invention relates broadly to raising and lifting apparatus and more particularly to a set of parts for use in railing or lifting operations employing a conventional jac One of the objects of my invention is to provide a construction of a set of parts for use with a conventional jack for raising and lifting operations.

Another object of my invention is to provide a construction of a set of parts which may be interposed between a load and a conventional jack for performing various kinds of lifting and raising operations.

Still another object of my invention is to provide a construction of a set of parts capable of being assembled in various combinations for use with a conventional automobile jack, whereby operations such as the raising of heavy duty loads, shoring, the lifting of heavy loads from an overhead hanger, the gripping of work in a vice for such operations as sawing or pipe-threading, or for the stretching or compacting of members between any two positions.

Other and further objects of my invention reside in the construction of elements of a set of parts for use with a conventional jack for performing lifting operations as set forth more fully in the specification hereinafter following by reference to the accompanying drawings, in which:

Fig. 1 is an elevational view showing the equipment of my invention arranged for heavy duty operation interposed between a conventional jack and a load for facilitating the raising of the load, the View being taken in a position looking toward the end of the load, which in this instance, is a vice scale;

Fig. 2 is a View similar to the view shown in Fig. 1 and showing the side elevational View of the equipment of my invention partially broken away and illustrated in section, the view being taken in the direction of arrow A in Fig. 1;

Fig. 3 is a transverse sectional view taken substantially on line 3 3 of Fig. 1;

Fig. 4 is an elevational view partially in section illustrating a modified form of the equipment of my invention for performing a shoring operation, su-ch as the raising or lifting of ceiling structures;

Fig. 5 is a fragmentary cross sectional view on an enlarged scale showing the manner of adjusting the elevating equipment in performing a shoring operation with the apparatus shown in Fig. 4;

Fig. 6 is an enlarged View showing a modified arrangement of the apparatus of my invention in carrying out a shoring or lifting operation and illustrating particularly a construction of safety socket for use with the lifting apparatus of my invention;

Fig. 7 is a view of a further modified arrangement of the lifting apparatus of my invention employed in an arrangement for lifting heavy loads;

Fig. 8 is a fragmentary detail View showing the manner of clamping one of the `adjustable heads with respect'to the standard inthe arrangement shown in Fig. 7;

2,852,229 Patented Sept 16, 1958 ice Fig. 9 is a horizontal sectional view taken on line 9-9 of Fig. 7;

Fig. 10 is a view illustrating the manner of suspendingA a load by use of the equipment of my invention with adjustable means for raising the load;

Fig. 11 is a vertical sectional view taken substantially on line 11-11 of Fig. 10;

Fig. 12 is a horizontal sectional view taken substantially on line 12-12 of Fig. 10;

Fig. 13 is a perspective view partially broken away and illustrated in section and showing one of the adjustableheads used in the equipment of my invention;

Fig. 14 is a side elevational view of the equipment ofr Fig. 18 is a perspective view of one of the heads em-` ployed in the equipment of Figs. 14-17;

Fig. 19 is a view showing the arrangement of the ad-` justable heads used in the form of my invention illustrated Y in Figs. 14-18 kas applied to the clamping of work to be sawed; and

Fig. 20 is an enlarged view of a fragmentary portion.' of the equipment showing the safety .socket associated with one of the adjustable'heads utilized in the formA of my invention illustrated in Fig. 6.

My invention is directed to an arrangement of a set of: which may be utilized with a conventional jack for increasing the mechanical eiort obtainable from: loads or stretching or cornf parts the jack for raising heavy l pressing members between two positions or providing a pipe stand or saw-horse for facilitating the clamping of' the clamping of wood for pipe for threading purposes or sawing.

My invention is also applicable as a telescopinlgy shore that can serve as a chain hoist The equipment may be used 1n and jack extension tool for lifting heavy loads. v either a horizontal or vertical position for pushing or pulling, utilizing a conventional jack. The-set of parts provided in my equipment may be used in a variety of'l different combinations for accomplishing the raising, hoisting, lowering and lifting operations heretofore de-v4 scribed.

Referring to the drawings 1n detail, reference character 1 designates a base which is provided at oppositeA ends with horizontally extending cylindrical sleeve members 2 and 3, and which supports, substantially at the` center thereof, the vertically erect post 4. The post 4 is provided at spaced intervals with diainetrically eiitended perforations 5 to permit adjustment of the position of the adjustable header 6. The adjustable header 6 iiicludes a tubular portion 7 which surrounds the post 4v and connects with the header 6. The header 6 is provided with a `depending hook member 8 for use when i' the device of my invention is used as a hoist (Figs. l0 The underside of the header 6 carries a plate` and 11). 19 which is engaged by the screw head 9 of the conventional jack 10 which may be raised or lowered through the conventional hand lever actuator shown at 11.

When the header 6 is elevated to the particular position: desired, a pin 5a is inserted through the selected perforation 5 and serves to support the lower end of the tubular portion 7 in its adjusted position.

A similar object is accomplished by perforating the" tubular portion 7 of the header 6 as represented atv 7a.

.By aligning any pair of the perforations 7a in tubularA portion 7 with any one of the spaced perforations S in post 4, the pin 5a may be passed through the aligned perforations for fixing the header 6 in position, thereby enabling the jack it) to be removed while header 6 is maintained ih its adjusted position; The loadjis engaged by the top surface 6a of the header 6 and in this illustrative example the load is illustrated as the axle of a vehicle, indicated at 11. In order to steady the post 4, I provide a brace member 14 consisting of a rod member 14 bent to shape t pass laterally through sleeve member 2 and extendablelupwardly and terminating in attened ends 14a through which a bolt member 15 extends through a diametrically extending perforation 16 adjacent the top post 4 for thereby rigidly bracing post 4 by interposing the jack extension assembly as heretofore describedbetween the jack 10 and the load 12. Adjustment of the header 6 may be accomplished and the adjustment fixed and the jack 10 there- `after removed.

By' distributing the load over the header 6, substantially greater lifting eort is obtainable by use of my equipment, and loads of unusual sizes and shapes may be engaged and elevated, not possible with simply a conventional jack.

In Fig. 4 I have shown the assembly of my invention modified to operate as a shore for raising and maintaining the ceiling structure 17 with respect to the base 18 on which the base 1 of the equipment of my invention is supported; The sleeve 7 is telescopically inserted over the upstanding end of post 4 and is fastened in position thereon by means of a pin 5a insertable through a selected perforation 5 in the post 4 as shown more clearly in Fig. 5. In the arrangement shown in Fig. 4 the header 6 is provided with a slightly recessed concentrically arranged socket 21 into which the tubularmember 22 is adapted to be fitted and secured in position within the socket recess 25, Vso that as the header is raised by the jack 10 the tubular member 22 is raised upwardly. The open top of the tubular member 22 is adapted to receivethe depending shank of member 23 which is maintained on the top thereof by means of transverse pin 24. The head of member 23 engages beneath the beam, joist or ceiling structure 17 whereby adjustment of jack 10 imparts movement to header 6 and advances the memberw23 upwardly for supporting the load indicated at 17. Thus a conventional jack may beutilized as a shore.

In Fig. 5 I have shown more clearly the manner in which sleeve 7 is fixed by means of pin 5a to the post 4 enabling the jack 10 to be withdrawn for use in other applications after the shore has been elevated to a desired position.

In Fig. 6 I have illustrated a further application of my invention as a shore of considerably increased height. This is accomplished by providing the header 6 and its associated sleeve 7 with a cylindrical socket shown at 25 into which the lower end of the extended Vtubular member 26, surrounding post 4, is adapted to fit. The tubular member 26 extends upwardly beyond the terminating end of post 4 and provides means upon which Vthe auxiliary header 27 may be adjustably clamped. The auxiliary header 2 7 is provided with a split sleeve'28 having a pair of lugs 28a extending therefrom through which the adjustable bolt member 29, controlled by adjustable screw device 29a,`extends for variably clamping auxiliary header 27 in any selected position on tubular member26. The upwardly projecting end of tubular member 26 serves as a means over which the upwardly extending tubular member 30 may be seated. Tubularmember 30 may extend avery substantialdistance to supportthe' shank member 31-of the header 32 which in turn supports the load shown at 17". The advantage of this construction is the considerable height obtainable in this assembly and heavy loadscan be lifted by the application of a relatively small force at the jack 10,

In Fig. 7 I have shown a further application of the jack assembly of my invent-ion in which header 6 may be raised by jack 10 for correspondingly raising the sleeve 33 which is attached to auxiliary header 34 for lifting the load 17". In this arrangement the sleeve 33 imparts lifting forces to auxiliary header 34 as the jack 10 is operated to move the screw head 9 thereof upwardly.

In Figs. 10-12 I have Shown a modified arrangement of the assembly of my invention which allows the assembly to be used as a hoist for raising the load indicated at 35 in an overhead structure indicated at 36. The overhead structure 36 has a chain 37 slung therearound and suspended pendantly therefrom and into which a hook 3S is engaged. The hook 38 is attached to the top header represented at 39. The top header 39 is a composite structure shown more clearly in Fig. I8 as including a central sleeve-like portion 39a through which post 4 projects with a vice-like end portion 4t)` on one end and aV gripping jaw 41 oh the other end. The gripping jaw 41 has a pair of depending guide members 42 thereon which serve as guide means for a lower header 43 in the application` of my invention illustrated in Figs. 14-17.

In the form of my invention shown in Figs. l0-l2 the top header 39 is tixedly secured adjacent the upper end of post 4 by the fastening bolt 15, heretofore described as extending through the perforated ends 14a of the rodl member 14 and through the sleeve 39a whereby the post 4 and the top header 39 are rigidly braced with respectl to base 1. The top header 39 has an upwardly extending support 39b extending therefrom and form-y ing a` connecting means for hook 38 whereby the entire assembly is suspended from the overhead structure 36.

By operating the jack 10 resting on base 1 and pendantly suspended by means ofthe chain 37 the header 6 is rised-- Header 6 has attached thereto. a hook 8 over which a chain 46 is hooked and allowed to depend downwardly through the aperture la in base 1 where chain 46 engages the load 3S. As the load is elevated the tubular portion 7 may be maintained in any desired position by means of a pin extending through a selected perforation 5 in post 4 to afford the vopportunity of shimming up the jack 10 with respect to base 1 in order to commence a further raising operation within the limits of the operating range of the jack 10.

When the assembly is used as a pipe vice, as represented in Figs. lll-17, thelower header 43, having gripping jaw 44 thereon, is raised upwardly by movement of header 6 against sleeve 47, the sleeve 47 being connected with the lower header 43. In this way the work, such as a pipe represented at 48, is clamped between vice-like gripping jaws 40 and 44 in order that an operation, such as threading, may be carried out.

When the equipment is used as a means for gripping boards, such as 49, in Fig. 19, where the boards are clamped betwen jaws 41 and 45, the device is readily usable as a saw-horse.

Thus it `will be seen that many applications for the assembly of my invention may be had and, although I have described certain of such applications, other uses for the assembly as an extension for a conventional jack', and will readily suggest themselves. Accordingly, I desire that it beV understood that no limitations upon my invention are intended other than may be imposed by the scope of the appended claim.

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

A jack comprising a substantially horizontal base, a post erected adjacent one end of said base and extending vertically therefrom, a jack removably mounted adjacent the other end of said base and operative in a vertical direction along an axis substantially parallel to the axis of said post, a sleeve member slidably positioned over said post, a principal header carried by said sleeve member and projecting over saidjack and engageable thereby,

said principal header having a cylindrical recess in the top thereof concentric with the axis of said post, a tubular sleeve adjustably positioned over said post and contiguous therewith and engageable at its lower end within the cylindrical recess in said principal header whereby said principal header supports the lower end of said tubular sleeve, an auxiliary header adjustably mounted on the upper portion of said tubular sleeve in spaced relation above said principal header, and an adjustable clamp for selectively securing said auxiliary header to said tubular sleeve whereby the lateral positions of each of said headers and the spatial relation of said auxiliary header with respect to said principal header in a vertical plane may be selectively xed.

References Cited in the lile of this patent UNITED STATES PATENTS Cox Apr. 4, 1899 Steward Aug. 28, 1917 Woodard Sept. 25, 1917 Stone Aug. 19, 1924 Dahl Feb. 5, 1925 McDuflie Aug. 4, 1925 Dart Mar. 18, 1930 Kitchen Mar. 3, 1942 Dunn Mar. 30, 1942 Zierke May 30, 1950 

